Gauge



Aug. 26, l1941.

B. NEwBl-:RRY

GAUGE Filed Dec. 6, 1940 www m A TTORNEYS.

Patented Aug. 26, 'I

. f GAUGE Barnes-Newberry, Narragansett, B. I., asaignol' to Federal Products' Corpo anode malla ration, a corporation of application December 6,1946, sensi N6. 368,626r

(ci. as m) f 6 Claims.

I'his invention relates to a gauge and has for one of its objects to mechanically transmit motion from a feeler finger to a remote location without two parts sliding one in contact with the other. V y

Another object of the invention is to do away with a bellows which has heretofore been utilized for the purpose of mounting a rod for transmitting motion from the feeler finger to the dial gauge and provide amore durable mounting for the rod.

Another object of the invention is to provide a spring to replace a more fragile bellows for a rod mounting on the gauge.

Another object of the invention is to provide a complete spring mounting of the rod for transmission of movement from the feeler finger to the dial indicator.

Another object of the invention is to provide for adjustment of the spring for the mounting of one end of the transmission rod that the required tension on the spring may be provided and the position of the rod determined.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. 1 is a central sectional view of a bore gauge complete; l

Fig. 2 is a sectional view of certain of the operating parts of the gauge: and

Fig. 3 is a section on line 3-3 of Fig. 1.

A rod for transmission of motion from a feeler linger of a bore gauge to the dial is mounted in thebody of a bore gauge, and has heretofore been supported at its upper end by a bellows.

This bellows is found to Vbecome easily stretched if struck by reason of parts thereof being moved beyond their elastic limit; and in order to avoid the dliiiculties experienced by the use of such bellows, I have mounted a spring to take the place of this bellows by which thevrod for transmission of motion from the feeler linger to the dial gauge becomes entirely spring mounted and may withstand shocks and Jars without any of the parts being stretched beyond their elastici limit, and thus, a, better arrangement of the parts is provided; and the following is a more detailed description of the present embodiment of this invention, illustrating the preferred means by which these advantageous results may be accomplished:

With reference to the drawing Il designates tubular portion II, hollow as at l2, and flanged as at I3 to receive a casingvl5 secured thereto by bolts I5. This casing is provided with an adjustable contact stud I1 to engage one point in the bore I3 (see Fig. 3) in which it may be placed, while spaced contact members I9 are carried by an arm and hingedly mounted by a leaf spring 22 and forced outwardly through the openings 24 in the casing I5 by spring 23 acting on abutment 2li' to contact other portions of the bore I8 and assist in centralizing the gauge in the bore.

A rod 25 is located in the hollow tubular body shown in Fig. 2 and is reduced as at 28 to extend through the adjustable collar 21 which is threaded as at 23 into the upper end of the tubular portion l I, and is held in adjusted position by a. clamping nut 29. The opening through this nut allows a substantial clearance for the reduced portion 26 of the rod 25. An abutment 3| is provided by means of the nut 32 threaded as at 33 to the upper end of the reduced portion 25 and a spring 34 engages beneath this nut 32 and the upper end of the collar 21 so as to resiliently support the rod 25 at its upper end and yet permit downward and rocking movement thereof.

A foot 35 is secured to the lower end of the rod 25, and this footis hinged by a leaf spring plate 36 secured as at 31 to the downwardlyextending portion 33 of the body and also secured as at 39 to the foot 35. This foot carries a feeler iinger or contact member 40 which extends through an opening 4I in the casing I5 and is located diametrically opposite to the contact I1 so that measurement of the bore I8 will Occur along a diametrical line. As the feeler finger is moved inwardly or outwardly, it swings by reason of hinge 35 and moves the rod 35 correspondingly; that is, as the feeler iinger 40 moves inwardly, the rod 25 moves downwardly.

A dial gauge designated generally has its plunger 46 extending from its casing 41, in its housing 43, which housing has a clamp sleeve 49 to embrace the tubular body Il and cause its plunger 46 to engage the head 32 of the rod 25.

This plunger will be under compression by a.

little or no damage occurs by reason of blows.

which might suddenly occur upon the feeler generally the body of the gauge consisting of a flgel, and n0 Wearing 0f Parts Will OCCHI by Sliding of one part upon the other, which sometimes detrimentally atiects a gauge and provides a source of trouble in gauging instruments.

I claim:

1. In a gauge, a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, a-spring encircling said rod and engaging said abutment at one end, and means supporting the other end of said spring on said tubular body, said spring being adapted to centralize and resiliently mount said rod in said body.

2. In a gauge, a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, a spring encircling said rod and engaging said abutment at one end, and means supporting the other end of said spring on said tubular body. said spring being adapted to centralize and resiliently mount said rod in said body, a feeler foot secured to the other end of said rod, and means for resiliently connecting said foot to said body.

3. In a gauge, a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, a spring encircling said rod and engaging said abutment at one end, and means supporting the other end of said spring on said tubular body, said spring being adapted to centralize and resilientiy mount said rod in Said body, a feeler foot secured to the other end of said rod, and a resilient leaf spring for hingedly connecting said rod to said body whereby said rod is spring supported at its opposite ends.

4. In a gauge. a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, an adjustable nut in the end of said body. and a spring encircling said rod and engaging said abutment at one end and said nut at its opposite end to centralize and resiliently mount said rod in said body.l

5. In a gauge, a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, an adjustable nut in the end of said body, a spring encircling said rod and engaging said abutment at one end and said nut at its opposite end to centralise and resiliently mount said rod in said body. a i'eeler foot secured to the other end oi' said rod; and means for resiliently connecting said foot to said body.

6. In a gauge, a tubular body, a rod centrally located in the hollow body and out of contact therewith and provided with an abutment at its end, an adjustable nut in the end oi' said body, a spring encircling said rod and engaging said abutment at one end and said nut at its opposite end to centralize and resiliently mount said rod in said body, a feeler foot secured to the other end of said rod, and a resilient leaf spring tor hingedly connecting said rod to said body whereby said rod is spring supported at its opposite ends.

BARNES NEWBERRY. 

